the cost of doing a proper rebuild on an lt77 is on par with getting a good second hand r380, and thats assuming you only do the syncros bearings and one or 2 of the gears.
lt77 shafts are getting a little thin on the ground too.
if you get one try to get the linkages for the tcase and the mechanism on the top of the box. its also wise to grab spare/replacement switches for it as odds are you're going to naff one on the way in (I usually do so I remove them fit a blanking bolt and then swap over the sensor when all the dangerous stuff is done)

